Googoola is a search that is powered by the Google search engine but specifically searches for ads. What do we mean by that? Let me tell you.
By entering a few keywords into the search field you can either search for Text Ads, Google Adwords, or Image Ads found on Google. The search engine may be useful if you saw an ad at one point and would like to find it again. For example you saw a very creative ad and can remember the key words present Googoola may help you find it. I tested this with many different keywords but was unable to actually find an ad that matched the keywords I used.
Try out the website it may be more useful to you than it was to me, the idea is sound that is if it works correctly.